Are Xinxiang Dingli Heavy Industry and Chengdu Dingli Heavy Industry the same company?

No. Xinxiang Dingli Heavy Industry is a heavy machinery manufacturer located in Xinxiang, Henan, while Chengdu Dingli Heavy Industry is a heavy machinery manufacturer located in Chengdu, Sichuan, so Xinxiang Dingli Heavy Industry and Chengdu Dingli Heavy Industry are not the same company. The business areas of the two companies are similar, but they are both independent companies and have no direct relationship.